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Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate
Li, Yong-li1,2; Qu, Jing-kui1,2; Wei, Guang-ye1,2; Qi, Tao1,2
2016-02-01
发表期刊JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN1006-706X
卷号23期号:2页码:103-108
摘要

Boron-bearing magnetite concentrate is typically characterized by low grade of iron and boron (w(TFe) = 51%-54%, w(B2O3) = 6% - 8%), as well as the close intergrowth of ascharite phase and magnetite phase. A promising technology was proposed to separate iron and boron by coupling the direct reduction of iron oxides and Na activation of boron minerals together. The influence of Na2CO3 as additive on the direct reduction of boron-bearing magnetite was studied by chemical analysis, kinetic analysis, XRD analysis and SEM analysis. The results showed that the addition of Na2CO3 not only activated boron minerals, but also reduced the activation energy of the reaction and promoted the reduction of iron oxides. Besides, the addition of Na2CO3 changed the composition and melting point of non-ferrous phase, and then promoted the growth and aggregation of iron grains, which was conducive to the subsequent magnetic separation. Thus, the coupling of the two processes is advantageous.

关键词Ludwigite Kinetic Analysis Direct Reduction Magnetic Separation Sodium Carbonate
文章类型Article
WOS标题词Science & Technology ; Technology
URL查看原文
收录类别SCI
语种英语
关键词[WOS]Metallic Iron ; Ludwigite Ore ; Carbon ; Separation ; Atmosphere ; Mechanisms ; Hematite ; Pellets ; Oxides
WOS研究方向Metallurgy & Metallurgical Engineering
WOS类目Metallurgy & Metallurgical Engineering
项目资助者National Natural Science Foundation of China(51304181) ; National Science Foundation for Distinguished Young Scholars of China(51125018)
WOS记录号WOS:000371375400004
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20652
专题研究所(批量导入)
通讯作者Qi, Tao
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
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GB/T 7714
Li, Yong-li,Qu, Jing-kui,Wei, Guang-ye,et al. Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2016,23(2):103-108.
APA Li, Yong-li,Qu, Jing-kui,Wei, Guang-ye,&Qi, Tao.(2016).Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,23(2),103-108.
MLA Li, Yong-li,et al."Influence of Na2CO3 as Additive on Direct Reduction of Boron-bearing Magnetite Concentrate".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 23.2(2016):103-108.
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